Dynamic behavior of SiO- and SiO2-coated ZnO ultrafine particles and growth mechanism of Zn2SiO4 crystal

Toshiaki Tanigaki, Hitoshi Suzuki, Yuki Kimura, Osamu Kido, Yoshio Saito, Chihiro Kaito

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In order to elucidate the stability of a silicon oxide layer on ZnO, the dynamic behavior of SiO- and SiO2-layer-coated ZnO ultrafine particle surfaces were directly observed by heating in a transmission electron microscope up to 700°C. In the case of SiO-coated ZnO ultrafine particles, ZnO nanocrystallites with the size of 2nm grew in the SiO layer at 500°C. In the case of SiO2-coated ZnO ultrafine particles, β-cristobalite with the size of 10nm order was grown at 600°C. Zn2SiO4 particles were grown by coalescence between β-cristobalite and ZnO at 700°C. By comparing the SiO and SiO2 layers on ZnO ultrafine particles, it was found that the behaviors of the two silicon oxide layers are clearly different.

Original languageEnglish
Pages (from-to)317-323
Number of pages7
JournalJournal of Crystal Growth
Volume256
Issue number3-4
DOIs
Publication statusPublished - 2003 Sep 1

Keywords

  • A1. Low dimensional structures
  • A1. Solid solutions
  • B1. Nanomaterials
  • B1. Silicates
  • B1. Zinc compounds

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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